Question 176445
{{{-3^2-5(4-2(4-9))}}} Start with the given expression.



{{{-9-5(4-2(4-9))}}} Square 3 to get 9



{{{-9-5(4-2(-5))}}} Subtract 9 from 4 to get -5



{{{-9-5(4+10)}}} Multiply -2 and -5 to get 10



{{{-9-5(14)}}} Add 4 to 10 to get 14



{{{-9-70}}} Multiply -5 and 14 to get -70



{{{-79}}} Subtract 70 from -9 to get -79



So {{{-3^2-5(4-2(4-9))=-79}}}